only call scalar finite when necessary

src/pathops/SkOpSegment.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkOpCoincidence.h"
 #include "SkOpContour.h"
 #include "SkOpSegment.h"
 #include "SkPathWriter.h"
@@ skipping 1665 matching lines @@
     // average t, find mid pt
     double midT = (prior->t() + spanBase->t()) / 2;
     SkPoint midPt = this->ptAtT(midT);
     bool coincident = true;
     // if the mid pt is not near either end pt, project perpendicular through opp seg
     if (!SkDPoint::ApproximatelyEqual(priorPtT->fPt, midPt)
             && !SkDPoint::ApproximatelyEqual(ptT->fPt, midPt)) {
         coincident = false;
         SkIntersections i;
         SkVector dxdy = (*CurveSlopeAtT[fVerb])(this->pts(), this->weight(), midT);
-        SkDLine ray = {{{midPt.fX, midPt.fY}, {midPt.fX + dxdy.fY, midPt.fY - dxdy.fX}}};
+        SkDLine ray = {{{midPt.fX, midPt.fY},
+                {(double) midPt.fX + dxdy.fY, (double) midPt.fY - dxdy.fX}}};
         (*CurveIntersectRay[opp->verb()])(opp->pts(), opp->weight(), ray, &i);
         // measure distance and see if it's small enough to denote coincidence
         for (int index = 0; index < i.used(); ++index) {
             SkDPoint oppPt = i.pt(index);
             if (oppPt.approximatelyEqual(midPt)) {
                 SkVector oppDxdy = (*CurveSlopeAtT[opp->verb()])(opp->pts(),
                         opp->weight(), i[index][0]);
                 oppDxdy.normalize();
                 dxdy.normalize();
                 SkScalar flatness = SkScalarAbs(dxdy.cross(oppDxdy) / FLT_EPSILON);
@@ skipping 77 matching lines @@
     int absOut = SkTAbs(outerWinding);
     int absIn = SkTAbs(innerWinding);
     bool result = absOut == absIn ? outerWinding < 0 : absOut < absIn;
     return result;
 }
 
 int SkOpSegment::windSum(const SkOpAngle* angle) const {
     const SkOpSpan* minSpan = angle->start()->starter(angle->end());
     return minSpan->windSum();
 }